本文属于机器翻译版本。若本译文内容与英语原文存在差异，则一律以英文原文为准。 # `DescribeAvailabilityZones`与 AWS SDK 或 CLI 配合使用以下代码示例演示如何使用 `DescribeAvailabilityZones`。操作示例是大型程序的代码摘录，必须在上下文中运行。您可以在以下代码示例中查看此操作的上下文： + [构建和管理弹性服务](example_cross_ResilientService_section.md) + [创建具有私有子网和 NAT 网关的 VPC](example_vpc_GettingStartedPrivate_section.md) + [开始使用 Amazon VPC](example_vpc_GettingStartedCLI_section.md) + [中转网关入门](example_vpc_TransitGatewayGettingStarted_section.md) ------ #### [ .NET ] **适用于 .NET 的 SDK** 还有更多相关信息 GitHub。在 [AWS 代码示例存储库](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/dotnetv3/cross-service/ResilientService/AutoScalerActions#code-examples)中查找完整示例，了解如何进行设置和运行。 ``` ///

/// Get a list of Availability Zones in the AWS Region of the Amazon EC2 Client. ///

/// A list of availability zones. public async Task> DescribeAvailabilityZones() { try { var zoneResponse = await _amazonEc2.DescribeAvailabilityZonesAsync( new DescribeAvailabilityZonesRequest()); return zoneResponse.AvailabilityZones.Select(z => z.ZoneName).ToList(); } catch (AmazonEC2Exception ec2Exception) { _logger.LogError($"An Amazon EC2 error occurred while listing availability zones.: {ec2Exception.Message}"); throw; } catch (Exception ex) { _logger.LogError($"An error occurred while listing availability zones.: {ex.Message}"); throw; } } ``` + 有关 API 的详细信息，请参阅 *适用于 .NET 的 AWS SDK API 参考[DescribeAvailabilityZones](https://docs.aws.amazon.com/goto/DotNetSDKV3/ec2-2016-11-15/DescribeAvailabilityZones)*中的。 ------ #### [ C\$1\$1 ] **SDK for C\$1\$1** 还有更多相关信息 GitHub。在 [AWS 代码示例存储库](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/cpp/example_code/ec2#code-examples)中查找完整示例，了解如何进行设置和运行。 ``` //! DescribeAvailabilityZones /*! \param clientConfiguration: AWS client configuration. \return bool: Function succeeded. */ int AwsDoc::EC2::describeAvailabilityZones(const Aws::Client::ClientConfiguration &clientConfiguration) { Aws::EC2::EC2Client ec2Client(clientConfiguration); Aws::EC2::Model::DescribeAvailabilityZonesRequest request; Aws::EC2::Model::DescribeAvailabilityZonesOutcome outcome = ec2Client.DescribeAvailabilityZones(request); if (outcome.IsSuccess()) { std::cout << std::left << std::setw(32) << "ZoneName" << std::setw(20) << "State" << std::setw(32) << "Region" << std::endl; const auto &zones = outcome.GetResult().GetAvailabilityZones(); for (const auto &zone: zones) { Aws::String stateString = Aws::EC2::Model::AvailabilityZoneStateMapper::GetNameForAvailabilityZoneState( zone.GetState()); std::cout << std::left << std::setw(32) << zone.GetZoneName() << std::setw(20) << stateString << std::setw(32) << zone.GetRegionName() << std::endl; } } else { std::cerr << "Failed to describe availability zones:" << outcome.GetError().GetMessage() << std::endl; } return outcome.IsSuccess(); } ``` + 有关 API 的详细信息，请参阅 *适用于 C\$1\$1 的 AWS SDK API 参考[DescribeAvailabilityZones](https://docs.aws.amazon.com/goto/SdkForCpp/ec2-2016-11-15/DescribeAvailabilityZones)*中的。 ------ #### [ CLI ] **AWS CLI** **描述可用区** 以下示例 `describe-availability-zones` 显示了可供您使用的可用区详细信息。响应仅包括当前区域的可用区。在本示例中，将使用配置文件默认的 `us-west-2`（俄勒冈州）区域。 ``` aws ec2 describe-availability-zones ``` 输出： ``` { "AvailabilityZones": [ { "State": "available", "OptInStatus": "opt-in-not-required", "Messages": [], "RegionName": "us-west-2", "ZoneName": "us-west-2a", "ZoneId": "usw2-az1", "GroupName": "us-west-2", "NetworkBorderGroup": "us-west-2" }, { "State": "available", "OptInStatus": "opt-in-not-required", "Messages": [], "RegionName": "us-west-2", "ZoneName": "us-west-2b", "ZoneId": "usw2-az2", "GroupName": "us-west-2", "NetworkBorderGroup": "us-west-2" }, { "State": "available", "OptInStatus": "opt-in-not-required", "Messages": [], "RegionName": "us-west-2", "ZoneName": "us-west-2c", "ZoneId": "usw2-az3", "GroupName": "us-west-2", "NetworkBorderGroup": "us-west-2" }, { "State": "available", "OptInStatus": "opt-in-not-required", "Messages": [], "RegionName": "us-west-2", "ZoneName": "us-west-2d", "ZoneId": "usw2-az4", "GroupName": "us-west-2", "NetworkBorderGroup": "us-west-2" }, { "State": "available", "OptInStatus": "opted-in", "Messages": [], "RegionName": "us-west-2", "ZoneName": "us-west-2-lax-1a", "ZoneId": "usw2-lax1-az1", "GroupName": "us-west-2-lax-1", "NetworkBorderGroup": "us-west-2-lax-1" } ] } ``` + 有关 API 的详细信息，请参阅*AWS CLI 命令参考[DescribeAvailabilityZones](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/ec2/describe-availability-zones.html)*中的。 ------ #### [ PowerShell ] **适用于 PowerShell V4 的工具** **示例 1：此示例描述当前区域可供您使用的可用区。** ``` Get-EC2AvailabilityZone ``` **输出**： ``` Messages RegionName State ZoneName -------- ---------- ----- -------- {} us-west-2 available us-west-2a {} us-west-2 available us-west-2b {} us-west-2 available us-west-2c ``` **示例 2：此示例描述所有处于受损状态的可用区。此示例使用的语法需要 PowerShell 版本 3 或更高版本。** ``` Get-EC2AvailabilityZone -Filter @{ Name="state";Values="impaired" } ``` **示例 3：在 PowerShell 版本 2 中，必须使用 New-Object 来创建过滤器。** ``` $filter = New-Object Amazon.EC2.Model.Filter $filter.Name = "state" $filter.Values = "impaired" Get-EC2AvailabilityZone -Filter $filter ``` + 有关 API 的详细信息，请参阅 *AWS Tools for PowerShell Cmdlet 参考 (V* 4) [DescribeAvailabilityZones](https://docs.aws.amazon.com/powershell/v4/reference)中的。 **适用于 PowerShell V5 的工具** **示例 1：此示例描述当前区域可供您使用的可用区。** ``` Get-EC2AvailabilityZone ``` **输出**： ``` Messages RegionName State ZoneName -------- ---------- ----- -------- {} us-west-2 available us-west-2a {} us-west-2 available us-west-2b {} us-west-2 available us-west-2c ``` **示例 2：此示例描述所有处于受损状态的可用区。此示例使用的语法需要 PowerShell 版本 3 或更高版本。** ``` Get-EC2AvailabilityZone -Filter @{ Name="state";Values="impaired" } ``` **示例 3：在 PowerShell 版本 2 中，必须使用 New-Object 来创建过滤器。** ``` $filter = New-Object Amazon.EC2.Model.Filter $filter.Name = "state" $filter.Values = "impaired" Get-EC2AvailabilityZone -Filter $filter ``` + 有关 API 的详细信息，请参阅 *AWS Tools for PowerShell Cmdlet 参考 (V* 5) [DescribeAvailabilityZones](https://docs.aws.amazon.com/powershell/v5/reference)中的。 ------ #### [ Python ] **适用于 Python 的 SDK（Boto3）** 还有更多相关信息 GitHub。在 [AWS 代码示例存储库](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/ec2#code-examples)中查找完整示例，了解如何进行设置和运行。 ``` class AutoScalingWrapper: """ Encapsulates Amazon EC2 Auto Scaling and EC2 management actions. """ def __init__( self, resource_prefix: str, inst_type: str, ami_param: str, autoscaling_client: boto3.client, ec2_client: boto3.client, ssm_client: boto3.client, iam_client: boto3.client, ): """ Initializes the AutoScaler class with the necessary parameters. :param resource_prefix: The prefix for naming AWS resources that are created by this class. :param inst_type: The type of EC2 instance to create, such as t3.micro. :param ami_param: The Systems Manager parameter used to look up the AMI that is created. :param autoscaling_client: A Boto3 EC2 Auto Scaling client. :param ec2_client: A Boto3 EC2 client. :param ssm_client: A Boto3 Systems Manager client. :param iam_client: A Boto3 IAM client. """ self.inst_type = inst_type self.ami_param = ami_param self.autoscaling_client = autoscaling_client self.ec2_client = ec2_client self.ssm_client = ssm_client self.iam_client = iam_client sts_client = boto3.client("sts") self.account_id = sts_client.get_caller_identity()["Account"] self.key_pair_name = f"{resource_prefix}-key-pair" self.launch_template_name = f"{resource_prefix}-template-" self.group_name = f"{resource_prefix}-group" # Happy path self.instance_policy_name = f"{resource_prefix}-pol" self.instance_role_name = f"{resource_prefix}-role" self.instance_profile_name = f"{resource_prefix}-prof" # Failure mode self.bad_creds_policy_name = f"{resource_prefix}-bc-pol" self.bad_creds_role_name = f"{resource_prefix}-bc-role" self.bad_creds_profile_name = f"{resource_prefix}-bc-prof" def get_availability_zones(self) -> List[str]: """ Gets a list of Availability Zones in the AWS Region of the Amazon EC2 client. :return: The list of Availability Zones for the client Region. """ try: response = self.ec2_client.describe_availability_zones() zones = [zone["ZoneName"] for zone in response["AvailabilityZones"]] log.info(f"Retrieved {len(zones)} availability zones: {zones}.") except ClientError as err: log.error("Failed to retrieve availability zones.") log.error(f"Full error:\n\t{err}") else: return zones ``` + 有关 API 的详细信息，请参阅适用[DescribeAvailabilityZones](https://docs.aws.amazon.com/goto/boto3/ec2-2016-11-15/DescribeAvailabilityZones)于 *Python 的AWS SDK (Boto3) API 参考*。 ------ #### [ SAP ABAP ] **适用于 SAP ABAP 的 SDK** 还有更多相关信息 GitHub。在 [AWS 代码示例存储库](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/sap-abap/services/ec2#code-examples)中查找完整示例，了解如何进行设置和运行。 ``` TRY. oo_result = lo_ec2->describeavailabilityzones( ). " oo_result is returned for testing purposes. " DATA(lt_zones) = oo_result->get_availabilityzones( ). MESSAGE 'Retrieved information about Availability Zones.' TYPE 'I'. CATCH /aws1/cx_rt_service_generic INTO DATA(lo_exception). DATA(lv_error) = |"{ lo_exception->av_err_code }" - { lo_exception->av_err_msg }|. MESSAGE lv_error TYPE 'E'. ENDTRY. ``` + 有关 API 的详细信息，请参阅适用[DescribeAvailabilityZones](https://docs.aws.amazon.com/sdk-for-sap-abap/v1/api/latest/index.html)于 S *AP 的AWS SDK ABAP API 参考*。 ------ 有关 S AWS DK 开发者指南和代码示例的完整列表，请参阅[使用 AWS SDK 创建 Amazon EC2 资源](sdk-general-information-section.md)。本主题还包括有关入门的信息以及有关先前的 SDK 版本的详细信息。